Thanks for posting. I am going to share with my teen daughters. They occasionally limp wrist and have stovepipes/malfunctions. Then dad has a talk about limp wristing and reviews grips with them. That is met with an, "Aaaaahhhh Dad ... Look, its not me" where they cycle several rounds without error.
The video gave me an idea. I am going to have them practice intentional limp wristing with the goal of causing malfunctions, so they know what it feels like.